John wiest



, (No Model.) 1

J. WIEST. 110m.

No. 403,164. Patented May 14, 1889.'

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@51j @Hom/WMS UNITED STATES PATENT OFFICE.

JOHN IIEST, OF YORK, PENNSYLVANIA.

HOIST.

SPECIFICATION formingpart of lLetters Patent No. 403,164, dated Mayil/l,1889.

Application liled September 19, 1887. Serial No.250,097. (No model.)

To all whom it mayv concern.-

Be it known that I, JOHN WIEST, a citizen of the United States, residingat York, in the county of York and State of Pennsylvania, have inventedcertain new and useful Improvements in Hoists; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to letters or ii gures of reference markedthereon, which form a part of this specification.

This invention has reference to hoists; vand it consists in the improvedconstruction hereinafter explained, whereby a compact andefficientarrangement is presented and an easy and effective operation secured.-

In the accompanying drawings, forming a part of this specification,Figure l isa sectional elevation f a hoist embodying my improvements,the same being taken on the line x, Fig. 2, which figure is a plan view.Figs. 3, 3, and 4 are enlarged detail views.

A designates a suitable supporting-frame, which is preferably ofrectangular formation, and is provided with a central cross-bar, A.Mounted in bearings in the upper side bars of the frame are the ends ofapower-shaft, B, which is located adjacent to and parallel with one ofthe end bars of the frame, as shown in Fig. 2. This shaft B may bedriven by any suitable means and imparts its rotation to acounter-shaft, E, through the medium of a worm, C, on said shaft B and aworm-wheel, D, on the shaft E.

In the present case the prime motor is an electric motor, and theelectricity for driving the same may be obtained from the electric lightor power mains of a city service, or from any other source, and in casesWhere it is desired to use a portable electric hoist remote from anyelectric mains-as, for example, in

the hoisting of building material or the raising of stone, &c., fromwells, shafts, quarries, and all the various uses to which a hoist isapplicable-a storage-battery is provided for operating the same.

In the case of the use of electricity as the motive power thepower-shaft B serves also as the armature-shaft of the motor,`as shownbut I do not limit myself to the use of this hoist on constitute anypart of my invention.

with an electric motor, for any other power may be employed for drivingthe power-shaft5 nor does the construction of the frame or thearrangement of the hoisting mechanism th ere- It can be changed orvaried and the hoist made fixed or portable, according to the purposefor which it is to be used.

One end of the counter-shaftE is provided with a ball-head, e, designedto rest in a correspondingly-shaped recess, e', in the upper end of abracket, e2, secured to frame A adjacent the worm-gearing. A universalbearing is thus secured, so as to permit the limited lateral movement ofshaft E. The shaft E near its other end is supported by a journal box orbearing, e, secured to cross-bar A by bolts e5 e5, passed throughslotted ends of said box, whereby the same is capable of being movedwith shaft E.

By reference to Fig. 2 it will be seen that a portion of said shaft Eextends beyond said box or bearing e4 for the attachment of afriction-pulley, H. In the rear end bar and the cross-bar Aof the framebear the ends of the windlass-shaft I, upon which is mounted thewindlass J, provided with the usual flanges, J. Upon the shaft I,betweenthe windlass and the bar A', is mounted a hollow frictionwheel,which has on the interior surface of its rim a friction-surface andcarries at its center a small friction-pulley, L. To a stud orprojection, a, secured to the cross-bar A', is fulcrumed a lever, h, thelower end of which is secured to the journal box or bearing e4 by ascrew or bolt, e6, so as to eect the sliding thereof in the desireddirection.

From the foregoing it will be seen that as the lever b is moved to theleft, Fig. l, the friction-wheel II will be moved in contact with theinterior surface of the rim of the wheel K, so as to rotate the windlassand raise the load to be elevated. By moving the lever in an oppositedirection to the right the pulley H will be forced against the pulley L,so that the latter will be revolved to turn the windlass in a reversedirection and at a greater degree of speed. The necessity for this willbe understood that in raising loadsin many cases it is desirable tolower the rope after the latter has been discharged at a much fasterspeed than what was required in raising the load.

The movement of the lever may be ellected by hand, treadle-power, orotherwise.

In the drawings I have represented a pair of electro-magnets, c, ou eachside of the lever, which are designed to be alternately positively andnegatively energized in order to secure th e attraction and repulsion ofthe lever.

The circuit-wires c of the magnets c may run to any point near or remoteVfrom which it is desired to operate the hoist, and by means olf aswitch or switches introduced into this circuit at one or more placesthchoist may be there controlled in a manner that will be readilyunderstood. For example, if the hoist is being' used for raising grainor merchandise to the dilii'erent floors ot' a warehouse, thecircuit-wires c will run successively to each floor, and by means oi' aswitch located on each fioor the hoist can be started or reversed at anyone of the landil'lgs.

I provide an improved brake for my hoist, which brake consists, as shownin Fig. l, of a strap, (l, which is connected to the frame at one sideand extends around the pulley K, and is connected by a link, e, with oneend of a bellcrank,f, pivoted in the trame and having its other endconnected by a rod, g, with Foot-pedal at the bottoni of the frame. ,By

depressing the pedal the strap is caused to bear against the peripheryof the wheel and cause its stoppage.

I claiml. In a hoistin apparatus, the combination,

with the power-shaft having a worm-gcaring, of the counter-shaftprovided with a wormwheel and having a universal bearing at one end andcarrying a friction-pulley at the other end, the slotted journal-box,the lever connected thereto1 and the windlass having a t'riction-pulley,substantially as set forth.

The combination of the shaft E, having one end` provided with auniversal bearing, a windlass-shafit and windlass, a hollowfriction-pulley and its smaller pulley located on said windlass-shaft, apulley located on the shaft E, and electro-magnets for moving saidshat't Eagainst the interior of said hollow pulley or its smallerpulley, substalitially as and for the purpose set forth.

3. The combination o'i the power-shaft B and counter-shaft E, andworin-gearing bctween the same, a universal bearing and atransversely-movable bearing for said shaft lll, pulley on the latter, aWindlass-shatt having hollow friction-pulley and smallerfriction-pulley, and a lever for movin g said transversely-movablebearing, substantially as and Afor the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN XVIES'I.

Nitnessesz A. B. MIcKLEv, l. l?. IIUBLEY.

